In a specific cafe and chair in Japan, one can travel back in time while drinking a cup of coffee. There are, however, 5 rules/restrictions. It opens for closure and changing one's future but not present.

Kazu works for family at a café. There is a belief that occupying a specific table seat at a table allows the occupant to travel back in time. While the traveller can choose the destination he has to abide by certain rules. Additionally, one's time travelling is limited to the period by which the coffee gets cold.—aghaemi

Urban legend has it that you can return to your chosen point in the past at Funiculi Funicula, the coffee shop where Tokita Kazu works. Kiyokawa Fumiko hears the rumor and shows up to talk again with her childhood friend, who left for the US after they had a fight. But, several rules must be obeyed in order to travel back to the past.—JFF